The sisters and Nashville co-stars both took to their Instagrams to show off the tattoo.

“magical human being. i wish everyone knew you the way i do. i love you more than any words could ever tell, lennon & maisy is forever ❤️ my heart feels like it’s gonna explode !!!!!” Maisy captioned the photo.

The 18-year-old singer and actress celebrated after the last day of filming the show by sharing a photo with sister Maisy from their first day and a long emotional note.

“this picture was from the first scene ever. today we filmed the last scene ever,” she wrote. “I don’t know when it’s gunna hit me, and I’m terrified for it to. There’s no way im fully comprehending at this moment what my life will be like without this show, without these people.”

“I am at a loss of words honestly so forgive me if I’m speaking backwards and inside out right now, but from the depths of my being, thank you,” Lennon continued. “thank you to Callie for picking me and Maisy off of our couch in 2012 completely clueless and oblivious to the world you were about to show us. Never would I have considered acting if it wasn’t for this show, I was so dead set on making music I didn’t even think for one second about doing or being anything else, and here I am now with such a passion for acting and this world of TV and movie making.”

“thank you to the entire cast and crew for inspiring me, moving me, every day. how lucky was I to be surrounded by the purest, most solid human beings on the planet from the youngest age. and how lucky i am to have my sister right in it all with me. soaking it all in. thank you guys for making this everything it was, everything it is. how special to have my sister and I’s childhood documented. so glad every awkward stage has been captured for the world to see ;) kidding, but actually not at all… DO NOT go back to season 1 please and if you do, do me a solid and don’t show me pictures. Ahhhhhh what magic this has been. no words could possibly express my gratitude. all the love in the world. Xox,” she concluded.

It was just announced that Lennon has signed a solo record deal with RECORDS/Columbia Records. The sisters have been performing for years as a duo under Lennon and Maisy.

“My heart couldn’t be more full today I’m so proud. I’ve been watching you for years in awe of your motivation to do what you love. I couldn’t possibly be more excited to see you change the world with your magical sound you got a golden one @columbiarecords .. so proud. So proud. So proud. My heart is full,” she wrote on Instagram along with a cute photo of the girls as little kids.

She also posted a video on her Instagram story jamming and singing along to a new song but had to mute it. “Me listening to lennons music SORRY HAD TO MUTE YOU CANT HEAR IT YET HAHA,” she captioned the video.

You can currently catch Lennon and Maisy in the sixth and final season of Nashville, airing Wednesdays at 9/8c on CMT.